#include <mach/mach_vm.h>
#include <mach/semaphore.h>
#include <mach/task_info.h>
+#include <mach/task_inspect.h>
#include <mach/task_special_ports.h>
#include <mach/sdt.h>
#include <kern/telemetry.h>
#endif
+#if MONOTONIC
+#include <kern/monotonic.h>
+#include <machine/monotonic.h>
+#endif /* MONOTONIC */
+
+#include <os/log.h>
+
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h> /* for kernel_map, ipc_kernel_map */
lck_grp_attr_t task_lck_grp_attr;
extern int exc_via_corpse_forking;
-extern int unify_corpse_blob_alloc;
extern int corpse_for_fatal_memkill;
/* Flag set by core audio when audio is playing. Used to stifle EXC_RESOURCE generation when active. */
struct _task_ledger_indices task_ledgers __attribute__((used)) =
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+#if !CONFIG_EMBEDDED
{ 0 /* initialized at runtime */},
-#ifdef CONFIG_BANK
+#endif /* !CONFIG_EMBEDDED */
+ -1, -1,
-1, -1,
-#endif
-1, -1,
};
kern_return_t task_suspend_internal(task_t);
kern_return_t task_resume_internal(task_t);
static kern_return_t task_start_halt_locked(task_t task, boolean_t should_mark_corpse);
-int proc_list_uptrs(void *p, uint64_t *udata_buffer, int size);
extern kern_return_t iokit_task_terminate(task_t task);
extern int proc_selfpid(void);
extern char *proc_name_address(struct proc *p);
extern uint64_t get_dispatchqueue_offset_from_proc(void *);
+extern int kevent_proc_copy_uptrs(void *proc, uint64_t *buf, int bufsize);
#if CONFIG_MEMORYSTATUS
extern void proc_memstat_terminated(struct proc* p, boolean_t set);
-extern boolean_t memorystatus_turnoff_exception_and_get_fatalness(boolean_t warning, const int max_footprint_mb);
-extern void memorystatus_on_ledger_footprint_exceeded(int warning, boolean_t is_fatal);
+extern void memorystatus_on_ledger_footprint_exceeded(int warning, boolean_t memlimit_is_active, boolean_t memlimit_is_fatal);
+extern void memorystatus_log_exception(const int max_footprint_mb, boolean_t memlimit_is_active, boolean_t memlimit_is_fatal);
+extern boolean_t memorystatus_allowed_vm_map_fork(__unused task_t task);
#endif /* CONFIG_MEMORYSTATUS */
#endif /* MACH_BSD */
* state with respect to its task's 64-bitness.
*/
-#if defined(__i386__) || defined(__x86_64__) || defined(__arm64__)
+#if defined(__x86_64__) || defined(__arm64__)
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread_mtx_lock(thread);
machine_thread_switch_addrmode(thread);
thread_mtx_unlock(thread);
+#if defined(__arm64__)
+ /* specifically, if running on H9 */
if (thread == current_thread()) {
uint64_t arg1, arg2;
int urgency;
*
* This is needed for bring-up, a different callback should be used
* in the future.
+ *
+ * TODO: Remove this callout when we no longer support 32-bit code on H9
*/
thread_lock(thread);
urgency = thread_get_urgency(thread, &arg1, &arg2);
- machine_thread_going_on_core(thread, urgency, 0);
+ machine_thread_going_on_core(thread, urgency, 0, 0, mach_approximate_time());
thread_unlock(thread);
splx(spl);
}
+#endif /* defined(__arm64__) */
}
-#endif /* defined(__i386__) || defined(__x86_64__) || defined(__arm64__) */
+#endif /* defined(__x86_64__) || defined(__arm64__) */
out:
task_unlock(task);
}
+void
+task_set_platform_binary(
+ task_t task,
+ boolean_t is_platform)
+{
+ task_lock(task);
+ if (is_platform) {
+ task->t_flags |= TF_PLATFORM;
+ } else {
+ task->t_flags &= ~(TF_PLATFORM);
+ }
+ task_unlock(task);
+}
void
-task_set_dyld_info(task_t task, mach_vm_address_t addr, mach_vm_size_t size)
+task_set_dyld_info(
+ task_t task,
+ mach_vm_address_t addr,
+ mach_vm_size_t size)
{
task_lock(task);
task->all_image_info_addr = addr;
- task->all_image_info_size = size;
- task_unlock(task);
+ task->all_image_info_size = size;
+ task_unlock(task);
}
void
void
task_bank_reset(__unused task_t task) {
-#if CONFIG_BANK
if (task->bank_context != NULL) {
bank_task_destroy(task);
}
-#endif
-
}
/*
void
task_bank_init(__unused task_t task) {
-#if CONFIG_BANK
if (task->bank_context != NULL) {
panic("Task bank init called with non null bank context for task: %p and bank_context: %p", task, task->bank_context);
}
bank_task_initialize(task);
-#endif
-
}
void
return task->active;
}
+boolean_t
+task_is_halting(task_t task)
+{
+ return task->halting;
+}
+
#if TASK_REFERENCE_LEAK_DEBUG
#include <kern/btlog.h>
zone_change(task_zone, Z_NOENCRYPT, TRUE);
+#if CONFIG_EMBEDDED
+ task_watch_init();
+#endif /* CONFIG_EMBEDDED */
/*
* Configure per-task memory limit.
#endif
panic("task_init\n");
+
vm_map_deallocate(kernel_task->map);
kernel_task->map = kernel_map;
lck_spin_init(&dead_task_statistics_lock, &task_lck_grp, &task_lck_attr);
assert(task_ledgers.sfi_wait_times[MAX_SFI_CLASS_ID -1] != -1);
#endif /* CONFIG_SCHED_SFI */
-#ifdef CONFIG_BANK
task_ledgers.cpu_time_billed_to_me = ledger_entry_add(t, "cpu_time_billed_to_me", "sched", "ns");
task_ledgers.cpu_time_billed_to_others = ledger_entry_add(t, "cpu_time_billed_to_others", "sched", "ns");
-#endif
task_ledgers.physical_writes = ledger_entry_add(t, "physical_writes", "res", "bytes");
task_ledgers.logical_writes = ledger_entry_add(t, "logical_writes", "res", "bytes");
+ task_ledgers.energy_billed_to_me = ledger_entry_add(t, "energy_billed_to_me", "power", "nj");
+ task_ledgers.energy_billed_to_others = ledger_entry_add(t, "energy_billed_to_others", "power", "nj");
if ((task_ledgers.cpu_time < 0) ||
(task_ledgers.tkm_private < 0) ||
(task_ledgers.purgeable_nonvolatile_compressed < 0) ||
(task_ledgers.platform_idle_wakeups < 0) ||
(task_ledgers.interrupt_wakeups < 0) ||
-#ifdef CONFIG_BANK
(task_ledgers.cpu_time_billed_to_me < 0) || (task_ledgers.cpu_time_billed_to_others < 0) ||
-#endif
(task_ledgers.physical_writes < 0) ||
- (task_ledgers.logical_writes < 0)
+ (task_ledgers.logical_writes < 0) ||
+ (task_ledgers.energy_billed_to_me < 0) ||
+ (task_ledgers.energy_billed_to_others < 0)
) {
panic("couldn't create entries for task ledger template");
}
ledger_track_credit_only(t, task_ledgers.phys_footprint);
+ ledger_track_credit_only(t, task_ledgers.page_table);
ledger_track_credit_only(t, task_ledgers.internal);
ledger_track_credit_only(t, task_ledgers.internal_compressed);
ledger_track_credit_only(t, task_ledgers.iokit_mapped);
ledger_set_callback(t, task_ledgers.interrupt_wakeups,
task_wakeups_rate_exceeded, NULL, NULL);
ledger_set_callback(t, task_ledgers.physical_writes, task_io_rate_exceeded, (void *)FLAVOR_IO_PHYSICAL_WRITES, NULL);
- ledger_set_callback(t, task_ledgers.logical_writes, task_io_rate_exceeded, (void *)FLAVOR_IO_LOGICAL_WRITES, NULL);
+ ledger_set_callback(t, task_ledgers.logical_writes, task_io_rate_exceeded, (void *)FLAVOR_IO_LOGICAL_WRITES, NULL);
+
+ ledger_template_complete(t);
task_ledger_template = t;
}
task_t parent_task,
coalition_t *parent_coalitions __unused,
boolean_t inherit_memory,
- boolean_t is_64bit,
+ __unused boolean_t is_64bit,
uint32_t t_flags,
uint32_t t_procflags,
task_t *child_task) /* OUT */
return(KERN_RESOURCE_SHORTAGE);
}
+
new_task->ledger = ledger;
#if defined(CONFIG_SCHED_MULTIQ)
new_task->t_flags = t_flags;
new_task->t_procflags = t_procflags;
new_task->importance = 0;
- new_task->corpse_info_kernel = NULL;
+ new_task->crashed_thread_id = 0;
new_task->exec_token = 0;
#if CONFIG_ATM
new_task->atm_context = NULL;
#endif
-#if CONFIG_BANK
new_task->bank_context = NULL;
-#endif
#ifdef MACH_BSD
new_task->bsd_info = NULL;
task_io_monitor_ctl(new_task, &flags);
#endif /* CONFIG_IO_ACCOUNTING */
-#if defined(__i386__) || defined(__x86_64__)
- new_task->i386_ldt = 0;
-#endif
+ machine_task_init(new_task, parent_task, inherit_memory);
new_task->task_debug = NULL;
new_task->affinity_space = NULL;
+ new_task->t_chud = 0;
+
new_task->pidsuspended = FALSE;
new_task->frozen = FALSE;
new_task->changing_freeze_state = FALSE;
new_task->hv_task_target = NULL;
#endif /* HYPERVISOR */
+#if CONFIG_EMBEDDED
+ queue_init(&new_task->task_watchers);
+ new_task->num_taskwatchers = 0;
+ new_task->watchapplying = 0;
+#endif /* CONFIG_EMBEDDED */
new_task->mem_notify_reserved = 0;
+ new_task->memlimit_attrs_reserved = 0;
#if IMPORTANCE_INHERITANCE
new_task->task_imp_base = NULL;
#endif /* IMPORTANCE_INHERITANCE */
-#if defined(__x86_64__)
- new_task->uexc_range_start = new_task->uexc_range_size = new_task->uexc_handler = 0;
-#endif
-
new_task->requested_policy = default_task_requested_policy;
new_task->effective_policy = default_task_effective_policy;
new_task->all_image_info_addr = parent_task->all_image_info_addr;
new_task->all_image_info_size = parent_task->all_image_info_size;
-#if defined(__i386__) || defined(__x86_64__)
- if (inherit_memory && parent_task->i386_ldt)
- new_task->i386_ldt = user_ldt_copy(parent_task->i386_ldt);
-#endif
if (inherit_memory && parent_task->affinity_space)
task_affinity_create(parent_task, new_task);
assert(IIT_NULL != new_task_imp);
ipc_importance_task_mark_donor(new_task_imp, TRUE);
}
+#if CONFIG_EMBEDDED
+ /* Embedded only wants to inherit for exec copy task */
+ if ((t_procflags & TPF_EXEC_COPY) == 0) {
+ inherit_receive = FALSE;
+ }
+#endif /* CONFIG_EMBEDDED */
if (inherit_receive) {
if (task_is_marked_importance_receiver(parent_task)) {
/* Initialize to zero for standard fork/spawn case */
new_task->total_user_time = 0;
new_task->total_system_time = 0;
+ new_task->total_ptime = 0;
new_task->faults = 0;
new_task->pageins = 0;
new_task->cow_faults = 0;
new_task->purged_memory_warn = 0;
new_task->purged_memory_critical = 0;
new_task->low_mem_privileged_listener = 0;
+ new_task->memlimit_is_active = 0;
+ new_task->memlimit_is_fatal = 0;
+ new_task->memlimit_active_exc_resource = 0;
+ new_task->memlimit_inactive_exc_resource = 0;
new_task->task_timer_wakeups_bin_1 = 0;
new_task->task_timer_wakeups_bin_2 = 0;
new_task->task_gpu_ns = 0;
new_task->task_invalidated_writes = 0;
new_task->task_metadata_writes = 0;
new_task->task_energy = 0;
+#if MONOTONIC
+ memset(&new_task->task_monotonic, 0, sizeof(new_task->task_monotonic));
+#endif /* MONOTONIC */
}
/* TODO: assert that new_task will be PID 1 (launchd) */
coalitions_adopt_init_task(new_task);
}
+ /*
+ * on exec, we need to transfer the coalition roles from the
+ * parent task to the exec copy task.
+ */
+ if (parent_task && (t_procflags & TPF_EXEC_COPY)) {
+ int coal_roles[COALITION_NUM_TYPES];
+ task_coalition_roles(parent_task, coal_roles);
+ (void)coalitions_set_roles(new_task->coalition, new_task, coal_roles);
+ }
} else {
coalitions_adopt_corpse_task(new_task);
}
to_task->total_user_time = from_task->total_user_time;
to_task->total_system_time = from_task->total_system_time;
+ to_task->total_ptime = from_task->total_ptime;
to_task->faults = from_task->faults;
to_task->pageins = from_task->pageins;
to_task->cow_faults = from_task->cow_faults;
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.sfi_wait_times[class_id]);
}
#endif
-#if CONFIG_BANK
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.cpu_time_billed_to_me);
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.cpu_time_billed_to_others);
-#endif
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.physical_writes);
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.logical_writes);
+ ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.energy_billed_to_me);
+ ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.energy_billed_to_others);
}
int task_dropped_imp_count = 0;
#if IMPORTANCE_INHERITANCE
if (refs > 1)
return;
+
+ atomic_load_explicit(&task->ref_count, memory_order_acquire);
if (refs == 1) {
/*
#else
if (refs > 0)
return;
+
+ atomic_load_explicit(&task->ref_count, memory_order_acquire);
+
#endif /* IMPORTANCE_INHERITANCE */
lck_mtx_lock(&tasks_threads_lock);
dead_task_statistics.task_timer_wakeups_bin_1 += task->task_timer_wakeups_bin_1;
dead_task_statistics.task_timer_wakeups_bin_2 += task->task_timer_wakeups_bin_2;
+ dead_task_statistics.total_ptime += task->total_ptime;
+ dead_task_statistics.total_pset_switches += task->ps_switch;
+ dead_task_statistics.task_gpu_ns += task->task_gpu_ns;
+ dead_task_statistics.task_energy += task->task_energy;
lck_spin_unlock(&dead_task_statistics_lock);
lck_mtx_destroy(&task->lock, &task_lck_grp);
#if MACH_BSD
/* clean up collected information since last reference to task is gone */
if (task->corpse_info) {
- task_crashinfo_destroy(task->corpse_info, RELEASE_CORPSE_REF);
+ void *corpse_info_kernel = kcdata_memory_get_begin_addr(task->corpse_info);
+ task_crashinfo_destroy(task->corpse_info);
task->corpse_info = NULL;
+ if (corpse_info_kernel) {
+ kfree(corpse_info_kernel, CORPSEINFO_ALLOCATION_SIZE);
+ }
}
#endif
- if (task->corpse_info_kernel) {
- kfree(task->corpse_info_kernel, CORPSEINFO_ALLOCATION_SIZE);
- }
#if CONFIG_MACF
if (task->crash_label) {
- mac_exc_action_label_task_destroy(task);
+ mac_exc_free_label(task->crash_label);
+ task->crash_label = NULL;
}
#endif
return(task_deallocate((task_t)task_name));
}
+/*
+ * task_inspect_deallocate:
+ *
+ * Drop a task inspection reference.
+ */
+void
+task_inspect_deallocate(
+ task_inspect_t task_inspect)
+{
+ return(task_deallocate((task_t)task_inspect));
+}
+
/*
* task_suspension_token_deallocate:
*
* collect crash info from bsd and mach based data
*/
kern_return_t
-task_collect_crash_info(task_t task, struct proc *proc, int is_corpse_fork)
+task_collect_crash_info(
+ task_t task,
+#ifdef CONFIG_MACF
+ struct label *crash_label,
+#endif
+ int is_corpse_fork)
{
kern_return_t kr = KERN_SUCCESS;
mach_vm_offset_t crash_data_ptr = 0;
void *crash_data_kernel = NULL;
void *crash_data_kernel_release = NULL;
- int corpse_blob_kernel_alloc = (is_corpse_fork || unify_corpse_blob_alloc);
+#if CONFIG_MACF
+ struct label *label, *free_label;
+#endif
if (!corpses_enabled()) {
return KERN_NOT_SUPPORTED;
}
+#if CONFIG_MACF
+ free_label = label = mac_exc_create_label();
+#endif
+
task_lock(task);
assert(is_corpse_fork || task->bsd_info != NULL);
if (task->corpse_info == NULL && (is_corpse_fork || task->bsd_info != NULL)) {
#if CONFIG_MACF
- /* Update the corpse label, used by the exception delivery mac hook */
- mac_exc_action_label_task_update(task, proc);
+ /* Set the crash label, used by the exception delivery mac hook */
+ free_label = task->crash_label; // Most likely NULL.
+ task->crash_label = label;
+ mac_exc_update_task_crash_label(task, crash_label);
#endif
task_unlock(task);
- if (!corpse_blob_kernel_alloc) {
- /* map crash data memory in task's vm map */
- kr = mach_vm_allocate(task->map, &crash_data_ptr, size, (VM_MAKE_TAG(VM_MEMORY_CORPSEINFO) | VM_FLAGS_ANYWHERE));
- } else {
- crash_data_kernel = (void *) kalloc(CORPSEINFO_ALLOCATION_SIZE);
- if (crash_data_kernel == 0)
- kr = KERN_RESOURCE_SHORTAGE;
- bzero(crash_data_kernel, CORPSEINFO_ALLOCATION_SIZE);
- crash_data_ptr = (mach_vm_offset_t) crash_data_kernel;
- }
- if (kr != KERN_SUCCESS)
+ crash_data_kernel = (void *) kalloc(CORPSEINFO_ALLOCATION_SIZE);
+ if (crash_data_kernel == NULL) {
+ kr = KERN_RESOURCE_SHORTAGE;
goto out_no_lock;
+ }
+ bzero(crash_data_kernel, CORPSEINFO_ALLOCATION_SIZE);
+ crash_data_ptr = (mach_vm_offset_t) crash_data_kernel;
/* Do not get a corpse ref for corpse fork */
- crash_data = task_crashinfo_alloc_init((mach_vm_address_t)crash_data_ptr, size, is_corpse_fork ? !GET_CORPSE_REF : GET_CORPSE_REF, corpse_blob_kernel_alloc ? KCFLAG_USE_MEMCOPY: KCFLAG_USE_COPYOUT);
+ crash_data = task_crashinfo_alloc_init((mach_vm_address_t)crash_data_ptr, size,
+ is_corpse_fork ? 0 : CORPSE_CRASHINFO_HAS_REF,
+ KCFLAG_USE_MEMCOPY);
if (crash_data) {
task_lock(task);
crash_data_release = task->corpse_info;
- crash_data_kernel_release = task->corpse_info_kernel;
+ crash_data_kernel_release = kcdata_memory_get_begin_addr(crash_data_release);
task->corpse_info = crash_data;
- task->corpse_info_kernel = crash_data_kernel;
task_unlock(task);
kr = KERN_SUCCESS;
} else {
- /* if failed to create corpse info, free the mapping */
- if (!corpse_blob_kernel_alloc) {
- if (KERN_SUCCESS != mach_vm_deallocate(task->map, crash_data_ptr, size)) {
- printf("mach_vm_deallocate failed to clear corpse_data for pid %d.\n", task_pid(task));
- }
- } else {
- kfree(crash_data_kernel, CORPSEINFO_ALLOCATION_SIZE);
- }
+ kfree(crash_data_kernel, CORPSEINFO_ALLOCATION_SIZE);
kr = KERN_FAILURE;
}
if (crash_data_release != NULL) {
- task_crashinfo_destroy(crash_data_release, is_corpse_fork ? !RELEASE_CORPSE_REF : RELEASE_CORPSE_REF);
+ task_crashinfo_destroy(crash_data_release);
}
if (crash_data_kernel_release != NULL) {
kfree(crash_data_kernel_release, CORPSEINFO_ALLOCATION_SIZE);
}
out_no_lock:
+#if CONFIG_MACF
+ if (free_label != NULL) {
+ mac_exc_free_label(free_label);
+ }
+#endif
return kr;
}
* Makes outcall to registered host port for a corpse.
*/
kern_return_t
-task_deliver_crash_notification(task_t task, thread_t thread, mach_exception_data_type_t subcode)
+task_deliver_crash_notification(
+ task_t task,
+ thread_t thread,
+ exception_type_t etype,
+ mach_exception_subcode_t subcode)
{
kcdata_descriptor_t crash_info = task->corpse_info;
thread_t th_iter = NULL;
task_lock(task);
if (task_is_a_corpse_fork(task)) {
- /* Populate code with EXC_RESOURCE for corpse fork */
- code[0] = EXC_RESOURCE;
+ /* Populate code with EXC_{RESOURCE,GUARD} for corpse fork */
+ code[0] = etype;
code[1] = subcode;
- } else if (unify_corpse_blob_alloc) {
+ } else {
/* Populate code with EXC_CRASH for corpses */
code[0] = EXC_CRASH;
code[1] = 0;
if (corpse_for_fatal_memkill) {
code[1] = subcode;
}
- } else {
- /* Populate code with address and length for EXC_CRASH */
- code[0] = crash_info->kcd_addr_begin;
- code[1] = crash_info->kcd_length;
}
+
queue_iterate(&task->threads, th_iter, thread_t, task_threads)
{
if (th_iter->corpse_dup == FALSE) {
thread_t self_thread;
(void) self_thread;
wait_interrupt_t wsave;
+#if CONFIG_MACF
+ struct label *crash_label = NULL;
+#endif
assert(task != kernel_task);
assert(task == current_task());
assert(!task_is_a_corpse(task));
- kr = task_collect_crash_info(task, (struct proc*)task->bsd_info, FALSE);
+#if CONFIG_MACF
+ crash_label = mac_exc_create_label_for_proc((struct proc*)task->bsd_info);
+#endif
+
+ kr = task_collect_crash_info(task,
+#if CONFIG_MACF
+ crash_label,
+#endif
+ FALSE);
if (kr != KERN_SUCCESS) {
- return kr;
+ goto out;
}
self_thread = current_thread();
task_set_corpse_pending_report(task);
task_set_corpse(task);
+ task->crashed_thread_id = thread_tid(self_thread);
kr = task_start_halt_locked(task, TRUE);
assert(kr == KERN_SUCCESS);
(void) thread_interrupt_level(wsave);
assert(task->halting == TRUE);
+
+out:
+#if CONFIG_MACF
+ mac_exc_free_label(crash_label);
+#endif
return kr;
}
void *p,
task_t new_task,
thread_t *thread_ret,
- int is64bit,
uint64_t **udata_buffer,
int *size,
int *num_udata)
return KERN_FAILURE;
}
- /* Setup new task's vmmap, switch from parent task's map to it COW map */
- oldmap = new_task->map;
- new_task->map = vm_map_fork(new_task->ledger,
- task->map,
- (VM_MAP_FORK_SHARE_IF_INHERIT_NONE |
- VM_MAP_FORK_PRESERVE_PURGEABLE));
- vm_map_deallocate(oldmap);
-
- if (is64bit) {
- vm_map_set_64bit(get_task_map(new_task));
- } else {
- vm_map_set_32bit(get_task_map(new_task));
- }
-
- /* Get all the udata pointers from kqueue */
- est_knotes = proc_list_uptrs(p, NULL, 0);
- if (est_knotes > 0) {
- buf_size = (est_knotes + 32) * sizeof(uint64_t);
- buffer = (uint64_t *) kalloc(buf_size);
- num_knotes = proc_list_uptrs(p, buffer, buf_size);
- if (num_knotes > est_knotes + 32) {
- num_knotes = est_knotes + 32;
+ /* Check with VM if vm_map_fork is allowed for this task */
+ if (task_allowed_vm_map_fork(task)) {
+
+ /* Setup new task's vmmap, switch from parent task's map to it COW map */
+ oldmap = new_task->map;
+ new_task->map = vm_map_fork(new_task->ledger,
+ task->map,
+ (VM_MAP_FORK_SHARE_IF_INHERIT_NONE |
+ VM_MAP_FORK_PRESERVE_PURGEABLE));
+ vm_map_deallocate(oldmap);
+
+ /* Get all the udata pointers from kqueue */
+ est_knotes = kevent_proc_copy_uptrs(p, NULL, 0);
+ if (est_knotes > 0) {
+ buf_size = (est_knotes + 32) * sizeof(uint64_t);
+ buffer = (uint64_t *) kalloc(buf_size);
+ num_knotes = kevent_proc_copy_uptrs(p, buffer, buf_size);
+ if (num_knotes > est_knotes + 32) {
+ num_knotes = est_knotes + 32;
+ }
}
}
/* Equivalent of current thread in corpse */
if (thread_array[i] == self) {
thread_return = new_thread;
+ new_task->crashed_thread_id = thread_tid(new_thread);
} else {
/* drop the extra ref returned by thread_create_with_continuation */
thread_deallocate(new_thread);
return kr;
}
+/*
+ * Place holder function to be filled by VM to return
+ * TRUE if vm_map_fork is allowed on the given task.
+ */
+boolean_t
+task_allowed_vm_map_fork(task_t task __unused)
+{
+ return memorystatus_allowed_vm_map_fork(task);
+}
+
#if CONFIG_SECLUDED_MEMORY
extern void task_set_can_use_secluded_mem_locked(
task_t task,
// PR-17045188: Revisit implementation
// task_partial_reap(task, pid);
+#if CONFIG_EMBEDDED
+ /*
+ * remove all task watchers
+ */
+ task_removewatchers(task);
+
+#endif /* CONFIG_EMBEDDED */
/*
* Destroy all synchronizers owned by the task.
vm_map_remove(task->map,
task->map->min_offset,
task->map->max_offset,
- /* no unnesting on final cleanup: */
- VM_MAP_REMOVE_NO_UNNESTING);
+ /*
+ * Final cleanup:
+ * + no unnesting
+ * + remove immutable mappings
+ */
+ (VM_MAP_REMOVE_NO_UNNESTING |
+ VM_MAP_REMOVE_IMMUTABLE));
/* release our shared region */
vm_shared_region_set(task, NULL);
*/
vm_map_remove(task->map, task->map->min_offset,
task->map->max_offset,
- /* no unnesting on final cleanup: */
- VM_MAP_REMOVE_NO_UNNESTING);
+ /*
+ * Final cleanup:
+ * + no unnesting
+ * + remove immutable mappings
+ */
+ (VM_MAP_REMOVE_NO_UNNESTING |
+ VM_MAP_REMOVE_IMMUTABLE));
/*
* Kick out any IOKitUser handles to the task. At best they're stale,
* Conditions:
* The caller holds a reference to the task
*/
-extern void vm_wake_compactor_swapper();
+extern void vm_wake_compactor_swapper(void);
extern queue_head_t c_swapout_list_head;
kern_return_t
case TASK_BASIC_INFO_32:
case TASK_BASIC2_INFO_32:
+#if defined(__arm__) || defined(__arm64__)
+ case TASK_BASIC_INFO_64:
+#endif
{
task_basic_info_32_t basic_info;
vm_map_t map;
break;
}
+#if defined(__arm__) || defined(__arm64__)
+ case TASK_BASIC_INFO_64_2:
+ {
+ task_basic_info_64_2_t basic_info;
+ vm_map_t map;
+ clock_sec_t secs;
+ clock_usec_t usecs;
+
+ if (*task_info_count < TASK_BASIC_INFO_64_2_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ basic_info = (task_basic_info_64_2_t)task_info_out;
+
+ map = (task == kernel_task)? kernel_map: task->map;
+ basic_info->virtual_size = map->size;
+ basic_info->resident_size =
+ (mach_vm_size_t)(pmap_resident_count(map->pmap))
+ * PAGE_SIZE_64;
+
+ basic_info->policy = ((task != kernel_task)?
+ POLICY_TIMESHARE: POLICY_RR);
+ basic_info->suspend_count = task->user_stop_count;
+
+ absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
+ basic_info->user_time.seconds =
+ (typeof(basic_info->user_time.seconds))secs;
+ basic_info->user_time.microseconds = usecs;
+
+ absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
+ basic_info->system_time.seconds =
+ (typeof(basic_info->system_time.seconds))secs;
+ basic_info->system_time.microseconds = usecs;
+
+ *task_info_count = TASK_BASIC_INFO_64_2_COUNT;
+ break;
+ }
+
+#else /* defined(__arm__) || defined(__arm64__) */
case TASK_BASIC_INFO_64:
{
task_basic_info_64_t basic_info;
*task_info_count = TASK_BASIC_INFO_64_COUNT;
break;
}
+#endif /* defined(__arm__) || defined(__arm64__) */
case MACH_TASK_BASIC_INFO:
{
case TASK_POWER_INFO_V2:
{
- if (*task_info_count < TASK_POWER_INFO_V2_COUNT) {
+ if (*task_info_count < TASK_POWER_INFO_V2_COUNT_OLD) {
error = KERN_INVALID_ARGUMENT;
break;
}
task_power_info_v2_t tpiv2 = (task_power_info_v2_t) task_info_out;
-
- uint64_t *task_energy = NULL;
- task_power_info_locked(task, &tpiv2->cpu_energy, &tpiv2->gpu_energy, task_energy);
+ task_power_info_locked(task, &tpiv2->cpu_energy, &tpiv2->gpu_energy, tpiv2);
break;
}
return (error);
}
+/*
+ * task_info_from_user
+ *
+ * When calling task_info from user space,
+ * this function will be executed as mig server side
+ * instead of calling directly into task_info.
+ * This gives the possibility to perform more security
+ * checks on task_port.
+ *
+ * In the case of TASK_DYLD_INFO, we require the more
+ * privileged task_port not the less-privileged task_name_port.
+ *
+ */
+kern_return_t
+task_info_from_user(
+ mach_port_t task_port,
+ task_flavor_t flavor,
+ task_info_t task_info_out,
+ mach_msg_type_number_t *task_info_count)
+{
+ task_t task;
+ kern_return_t ret;
+
+ if (flavor == TASK_DYLD_INFO)
+ task = convert_port_to_task(task_port);
+ else
+ task = convert_port_to_task_name(task_port);
+
+ ret = task_info(task, flavor, task_info_out, task_info_count);
+
+ task_deallocate(task);
+
+ return ret;
+}
+
/*
* task_power_info
*
task_t task,
task_power_info_t info,
gpu_energy_data_t ginfo,
- uint64_t *task_energy)
+ task_power_info_v2_t infov2)
{
thread_t thread;
ledger_amount_t tmp;
info->total_user = task->total_user_time;
info->total_system = task->total_system_time;
- if (task_energy) {
- *task_energy = task->task_energy;
+#if CONFIG_EMBEDDED
+ if (infov2) {
+ infov2->task_energy = task->task_energy;
}
+#endif
if (ginfo) {
ginfo->task_gpu_utilisation = task->task_gpu_ns;
}
+ if (infov2) {
+ infov2->task_ptime = task->total_ptime;
+ infov2->task_pset_switches = task->ps_switch;
+ }
+
queue_iterate(&task->threads, thread, thread_t, task_threads) {
uint64_t tval;
spl_t x;
info->task_timer_wakeups_bin_1 += thread->thread_timer_wakeups_bin_1;
info->task_timer_wakeups_bin_2 += thread->thread_timer_wakeups_bin_2;
- if (task_energy) {
- *task_energy += ml_energy_stat(thread);
+#if CONFIG_EMBEDDED
+ if (infov2) {
+ infov2->task_energy += ml_energy_stat(thread);
}
+#endif
tval = timer_grab(&thread->user_timer);
info->total_user += tval;
+ if (infov2) {
+ tval = timer_grab(&thread->ptime);
+ infov2->task_ptime += tval;
+ infov2->task_pset_switches += thread->ps_switch;
+ }
+
tval = timer_grab(&thread->system_timer);
if (thread->precise_user_kernel_time) {
info->total_system += tval;
task_t task)
{
uint64_t gpu_time = 0;
+#if !CONFIG_EMBEDDED
thread_t thread;
task_lock(task);
}
task_unlock(task);
+#else /* CONFIG_EMBEDDED */
+ /* silence compiler warning */
+ (void)task;
+#endif /* !CONFIG_EMBEDDED */
return gpu_time;
}
return energy;
}
+
+uint64_t
+task_cpu_ptime(
+ __unused task_t task)
+{
+ return 0;
+}
+
+
kern_return_t
task_purgable_info(
task_t task,
return ret;
}
+
+static kern_return_t __attribute__((noinline,not_tail_called))
+PROC_VIOLATED_GUARD__SEND_EXC_GUARD_AND_SUSPEND(
+ mach_exception_code_t code,
+ mach_exception_subcode_t subcode,
+ void *reason)
+{
+#ifdef MACH_BSD
+ if (1 == proc_selfpid())
+ return KERN_NOT_SUPPORTED; // initproc is immune
+#endif
+ mach_exception_data_type_t codes[EXCEPTION_CODE_MAX] = {
+ [0] = code,
+ [1] = subcode,
+ };
+ task_t task = current_task();
+ kern_return_t kr;
+
+ /* (See jetsam-related comments below) */
+
+ proc_memstat_terminated(task->bsd_info, TRUE);
+ kr = task_enqueue_exception_with_corpse(task, EXC_GUARD, codes, 2, reason);
+ proc_memstat_terminated(task->bsd_info, FALSE);
+ return kr;
+}
+
+extern kern_return_t
+task_violated_guard(mach_exception_code_t, mach_exception_subcode_t, void *);
+
+kern_return_t
+task_violated_guard(
+ mach_exception_code_t code,
+ mach_exception_subcode_t subcode,
+ void *reason)
+{
+ return PROC_VIOLATED_GUARD__SEND_EXC_GUARD_AND_SUSPEND(code, subcode, reason);
+}
+
+
#if CONFIG_MEMORYSTATUS
+
+boolean_t
+task_get_memlimit_is_active(task_t task)
+{
+ assert (task != NULL);
+
+ if (task->memlimit_is_active == 1) {
+ return(TRUE);
+ } else {
+ return (FALSE);
+ }
+}
+
+void
+task_set_memlimit_is_active(task_t task, boolean_t memlimit_is_active)
+{
+ assert (task != NULL);
+
+ if (memlimit_is_active) {
+ task->memlimit_is_active = 1;
+ } else {
+ task->memlimit_is_active = 0;
+ }
+}
+
+boolean_t
+task_get_memlimit_is_fatal(task_t task)
+{
+ assert(task != NULL);
+
+ if (task->memlimit_is_fatal == 1) {
+ return(TRUE);
+ } else {
+ return(FALSE);
+ }
+}
+
+void
+task_set_memlimit_is_fatal(task_t task, boolean_t memlimit_is_fatal)
+{
+ assert (task != NULL);
+
+ if (memlimit_is_fatal) {
+ task->memlimit_is_fatal = 1;
+ } else {
+ task->memlimit_is_fatal = 0;
+ }
+}
+
+boolean_t
+task_has_triggered_exc_resource(task_t task, boolean_t memlimit_is_active)
+{
+ boolean_t triggered = FALSE;
+
+ assert(task == current_task());
+
+ /*
+ * Returns true, if task has already triggered an exc_resource exception.
+ */
+
+ if (memlimit_is_active) {
+ triggered = (task->memlimit_active_exc_resource ? TRUE : FALSE);
+ } else {
+ triggered = (task->memlimit_inactive_exc_resource ? TRUE : FALSE);
+ }
+
+ return(triggered);
+}
+
+void
+task_mark_has_triggered_exc_resource(task_t task, boolean_t memlimit_is_active)
+{
+ assert(task == current_task());
+
+ /*
+ * We allow one exc_resource per process per active/inactive limit.
+ * The limit's fatal attribute does not come into play.
+ */
+
+ if (memlimit_is_active) {
+ task->memlimit_active_exc_resource = 1;
+ } else {
+ task->memlimit_inactive_exc_resource = 1;
+ }
+}
+
#define HWM_USERCORE_MINSPACE 250 // free space (in MB) required *after* core file creation
void __attribute__((noinline))
*/
proc_memstat_terminated(current_task()->bsd_info, TRUE);
- printf("process %s[%d] crossed memory high watermark (%d MB); sending "
- "EXC_RESOURCE.\n", procname, pid, max_footprint_mb);
-
code[0] = code[1] = 0;
EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_MEMORY);
EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_HIGH_WATERMARK);
task_resume_internal(task);
}
} else {
- task_enqueue_exception_with_corpse(task, code, EXCEPTION_CODE_MAX);
+ task_enqueue_exception_with_corpse(task, EXC_RESOURCE,
+ code, EXCEPTION_CODE_MAX, NULL);
}
/*
{
ledger_amount_t max_footprint, max_footprint_mb;
task_t task;
- boolean_t is_fatal;
- boolean_t trigger_exception;
+ boolean_t is_warning;
+ boolean_t memlimit_is_active;
+ boolean_t memlimit_is_fatal;
if (warning == LEDGER_WARNING_DIPPED_BELOW) {
/*
* Task memory limits only provide a warning on the way up.
*/
return;
- }
+ } else if (warning == LEDGER_WARNING_ROSE_ABOVE) {
+ /*
+ * This task is in danger of violating a memory limit,
+ * It has exceeded a percentage level of the limit.
+ */
+ is_warning = TRUE;
+ } else {
+ /*
+ * The task has exceeded the physical footprint limit.
+ * This is not a warning but a true limit violation.
+ */
+ is_warning = FALSE;
+ }
task = current_task();
ledger_get_limit(task->ledger, task_ledgers.phys_footprint, &max_footprint);
max_footprint_mb = max_footprint >> 20;
- /*
- * Capture the trigger exception flag before turning off the exception.
- */
- trigger_exception = task->rusage_cpu_flags & TASK_RUSECPU_FLAGS_PHYS_FOOTPRINT_EXCEPTION ? TRUE : FALSE;
-
- is_fatal = memorystatus_turnoff_exception_and_get_fatalness((warning == LEDGER_WARNING_ROSE_ABOVE) ? TRUE : FALSE, (int)max_footprint_mb);
+ memlimit_is_active = task_get_memlimit_is_active(task);
+ memlimit_is_fatal = task_get_memlimit_is_fatal(task);
/*
- * If this an actual violation (not a warning),
- * generate a non-fatal high watermark EXC_RESOURCE.
+ * If this is an actual violation (not a warning), then generate EXC_RESOURCE exception.
+ * We only generate the exception once per process per memlimit (active/inactive limit).
+ * To enforce this, we monitor state based on the memlimit's active/inactive attribute
+ * and we disable it by marking that memlimit as exception triggered.
*/
- if ((warning == 0) && trigger_exception) {
- PROC_CROSSED_HIGH_WATERMARK__SEND_EXC_RESOURCE_AND_SUSPEND((int)max_footprint_mb, is_fatal);
+ if ((is_warning == FALSE) && (!task_has_triggered_exc_resource(task, memlimit_is_active))) {
+ PROC_CROSSED_HIGH_WATERMARK__SEND_EXC_RESOURCE_AND_SUSPEND((int)max_footprint_mb, memlimit_is_fatal);
+ memorystatus_log_exception((int)max_footprint_mb, memlimit_is_active, memlimit_is_fatal);
+ task_mark_has_triggered_exc_resource(task, memlimit_is_active);
}
- memorystatus_on_ledger_footprint_exceeded((warning == LEDGER_WARNING_ROSE_ABOVE) ? TRUE : FALSE,
- is_fatal);
+ memorystatus_on_ledger_footprint_exceeded(is_warning, memlimit_is_active, memlimit_is_fatal);
}
extern int proc_check_footprint_priv(void);
{
kern_return_t error;
+ boolean_t memlimit_is_active;
+ boolean_t memlimit_is_fatal;
+
if ((error = proc_check_footprint_priv())) {
return (KERN_NO_ACCESS);
}
- return task_set_phys_footprint_limit_internal(task, new_limit_mb, old_limit_mb, FALSE);
+ /*
+ * This call should probably be obsoleted.
+ * But for now, we default to current state.
+ */
+ memlimit_is_active = task_get_memlimit_is_active(task);
+ memlimit_is_fatal = task_get_memlimit_is_fatal(task);
+
+ return task_set_phys_footprint_limit_internal(task, new_limit_mb, old_limit_mb, memlimit_is_active, memlimit_is_fatal);
}
kern_return_t
task_t task,
int new_limit_mb,
int *old_limit_mb,
- boolean_t trigger_exception)
+ boolean_t memlimit_is_active,
+ boolean_t memlimit_is_fatal)
{
ledger_amount_t old;
ledger_get_limit(task->ledger, task_ledgers.phys_footprint, &old);
+
+ /*
+ * Check that limit >> 20 will not give an "unexpected" 32-bit
+ * result. There are, however, implicit assumptions that -1 mb limit
+ * equates to LEDGER_LIMIT_INFINITY.
+ */
+ assert(((old & 0xFFF0000000000000LL) == 0) || (old == LEDGER_LIMIT_INFINITY));
if (old_limit_mb) {
- /*
- * Check that limit >> 20 will not give an "unexpected" 32-bit
- * result. There are, however, implicit assumptions that -1 mb limit
- * equates to LEDGER_LIMIT_INFINITY.
- */
- assert(((old & 0xFFF0000000000000LL) == 0) || (old == LEDGER_LIMIT_INFINITY));
*old_limit_mb = (int)(old >> 20);
}
ledger_set_limit(task->ledger, task_ledgers.phys_footprint,
max_task_footprint ? max_task_footprint : LEDGER_LIMIT_INFINITY,
max_task_footprint ? max_task_footprint_warning_level : 0);
+
+ task_lock(task);
+ task_set_memlimit_is_active(task, memlimit_is_active);
+ task_set_memlimit_is_fatal(task, memlimit_is_fatal);
+ task_unlock(task);
+
return (KERN_SUCCESS);
}
task_lock(task);
- if (trigger_exception) {
- task->rusage_cpu_flags |= TASK_RUSECPU_FLAGS_PHYS_FOOTPRINT_EXCEPTION;
- } else {
- task->rusage_cpu_flags &= ~TASK_RUSECPU_FLAGS_PHYS_FOOTPRINT_EXCEPTION;
+ if ((memlimit_is_active == task_get_memlimit_is_active(task)) &&
+ (memlimit_is_fatal == task_get_memlimit_is_fatal(task)) &&
+ (((ledger_amount_t)new_limit_mb << 20) == old)) {
+ /*
+ * memlimit state is not changing
+ */
+ task_unlock(task);
+ return(KERN_SUCCESS);
}
+ task_set_memlimit_is_active(task, memlimit_is_active);
+ task_set_memlimit_is_fatal(task, memlimit_is_fatal);
+
ledger_set_limit(task->ledger, task_ledgers.phys_footprint,
(ledger_amount_t)new_limit_mb << 20, PHYS_FOOTPRINT_WARNING_LEVEL);
return (found_thread);
}
+int pid_from_task(task_t task)
+{
+ int pid = -1;
+
+ if (task->bsd_info) {
+ pid = proc_pid(task->bsd_info);
+ } else {
+ pid = task_pid(task);
+ }
+
+ return pid;
+}
/*
* Control the CPU usage monitor for a task.
fatal = task->rusage_cpu_flags & TASK_RUSECPU_FLAGS_FATAL_WAKEUPSMON;
trace_resource_violation(RMON_CPUWAKES_VIOLATED, &lei);
- printf("process %s[%d] caught waking the CPU %llu times "
+ os_log(OS_LOG_DEFAULT, "process %s[%d] caught waking the CPU %llu times "
"over ~%llu seconds, averaging %llu wakes / second and "
"violating a %slimit of %llu wakes over %llu seconds.\n",
procname, pid,
return;
}
if (audio_active) {
- printf("process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
+ os_log(OS_LOG_DEFAULT, "process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
"supressed due to audio playback\n", procname, pid);
return;
}
if (lei.lei_last_refill == 0) {
- printf("process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
+ os_log(OS_LOG_DEFAULT, "process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
"supressed due to lei.lei_last_refill = 0 \n", procname, pid);
}
if (flavor == FLAVOR_IO_LOGICAL_WRITES) {
trace_resource_violation(RMON_LOGWRITES_VIOLATED, &lei);
}
- printf("process [%d] caught causing excessive I/O (flavor: %d). Task I/O: %lld MB. [Limit : %lld MB per %lld secs]\n",
+ os_log(OS_LOG_DEFAULT, "process [%d] caught causing excessive I/O (flavor: %d). Task I/O: %lld MB. [Limit : %lld MB per %lld secs]\n",
pid, flavor, (lei.lei_balance / (1024 * 1024)), (lei.lei_limit / (1024 * 1024)), (lei.lei_refill_period / NSEC_PER_SEC));
kr = send_resource_violation(send_disk_writes_violation, task, &lei, kRNFlagsNone);
vm_map_offset_t map_data;
vm_offset_t data;
- assert(infos_copy != NULL);
+ if (!infos_copy) {
+ return KERN_INVALID_ADDRESS;
+ }
+
+ if (!kdebug_enable ||
+ !kdebug_debugid_enabled(KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, 0)))
+ {
+ vm_map_copy_discard(infos_copy);
+ return KERN_SUCCESS;
+ }
if (task == NULL || task != current_task()) {
return KERN_INVALID_TASK;
return KERN_NOT_SUPPORTED;
}
+kern_return_t
+task_inspect(task_inspect_t task_insp, task_inspect_flavor_t flavor,
+ task_inspect_info_t info_out, mach_msg_type_number_t *size_in_out)
+{
+#if MONOTONIC
+ task_t task = (task_t)task_insp;
+ kern_return_t kr = KERN_SUCCESS;
+ mach_msg_type_number_t size;
+
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ size = *size_in_out;
+
+ switch (flavor) {
+ case TASK_INSPECT_BASIC_COUNTS: {
+ struct task_inspect_basic_counts *bc;
+ uint64_t task_counts[MT_CORE_NFIXED];
+
+ if (size < TASK_INSPECT_BASIC_COUNTS_COUNT) {
+ kr = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ mt_fixed_task_counts(task, task_counts);
+ bc = (struct task_inspect_basic_counts *)info_out;
+#ifdef MT_CORE_INSTRS
+ bc->instructions = task_counts[MT_CORE_INSTRS];
+#else /* defined(MT_CORE_INSTRS) */
+ bc->instructions = 0;
+#endif /* !defined(MT_CORE_INSTRS) */
+ bc->cycles = task_counts[MT_CORE_CYCLES];
+ size = TASK_INSPECT_BASIC_COUNTS_COUNT;
+ break;
+ }
+ default:
+ kr = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ if (kr == KERN_SUCCESS) {
+ *size_in_out = size;
+ }
+ return kr;
+#else /* MONOTONIC */
+#pragma unused(task_insp, flavor, info_out, size_in_out)
+ return KERN_NOT_SUPPORTED;
+#endif /* !MONOTONIC */
+}
+
#if CONFIG_SECLUDED_MEMORY
int num_tasks_can_use_secluded_mem = 0;
{
return (&task->io_user_clients);
}
+
+void
+task_copy_fields_for_exec(task_t dst_task, task_t src_task)
+{
+ dst_task->vtimers = src_task->vtimers;
+}
projects / apple / xnu.git / blobdiff